Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tren do snippets" » "dung tren do snippets", "dong tien do snippets", "dong truyen do snippets", "dong tren doi snippets", "dong trien do snippets", "dong tren co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong tren do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tren do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tren do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tren do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.